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The aqueous phase oxidation of cyclohexane using gamma radiation
Author(s) -
Ashline Ronald C.,
Von Berg Robert L.
Publication year - 1969
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690150317
Subject(s) - cyclohexanol , cyclohexanone , radiolysis , chemistry , cyclohexane , aqueous solution , radiation chemistry , hydrogen peroxide , cobalt 60 , reaction rate constant , oxygen , solvent , aqueous two phase system , irradiation , inorganic chemistry , radiochemistry , kinetics , chemical reaction , organic chemistry , catalysis , physics , quantum mechanics , nuclear physics
A study was made of the radiolytic oxidation of cyclohexane in aqueous solution by using cobalt 60 gamma radiation. In the presence of dissolved oxygen gas the reaction proceeds irreversibly with the formation of a number of oxidation products. Those identified were cyclohexanol, cyclohexanone, and hydrogen peroxide. Trace quantities of carbon dioxide were also detected in the liquid phase. Using a constant dose rate of 15 × 10 4 rad./hr. in all runs, radiation yields were G(C 6 H 11 OH) = 0.49, and G(C 6 H 10 O) = 1.08. When molecular oxygen was excluded from the system, neither cyclohexanol nor cyclohexanone was formed on irradiation. A simplified kinetic model based on competition by the various solutes in the system for a single primary radical species produced by radiolysis of the solvent molecules is developed. Results generated using the mathematical model are compared with the experimental data. Excellent agreement between the observed and computed trends is noted at radiation doses up to 50 × 10 4 rad.